现在64位下简单多了
;以win64下为例
section .text
Uint128x128To256_64:
;void UInt128x128To256( UINT64 result, const UINT64 left, const UINT64 right )
;rcx = result, rdx = left, r8 = right
;首先做下调整
mov r10, rcx
mov r9, rdx
mov r11, 0
;r10 = result, r9 = left, r8 = right
mov rax,
mul
mov , rax
mov , rdx
mov rax,
mul
add , rax
adc rdx, 0
mov , rdx
mov rax,
mul
add , rax
adc , rdx
adc r11, 0
mov , r11
mov rax,
mul
add , rax
adc , rdx
ret
无心人 发表于 2023-5-22 16:02
现在64位下简单多了
我看不懂！为什么会有这么多回复